Pix and VPN access

I have a Pix 525 with software 6.1 (1). I'm using a private network with
NAT to the Internet.

I have users on my network that have to access a Nortel VPN on the outside
with the Nortel client on their workstation. I've been able to configure my
Pix for that by giving each user a static public Ip address and creating the
necessary access-list. Everything is working fine but I don't like the fact
that each user must have a public Ip.

My question, is it possible to configure the Pix so the users can access the
VPN without having to give them static public Ip addresses?

Yes...you can apply VPN with NAT. I tried it with Microsoft RRAS and Cisco
PIX 500 and it works. I just let the VPN traffic through the firewall, and I
use DHCP Relay Agent to assign local IP address to the remote VPN client.